I was just doing my daily BlogLines reading, and stumbled across this article, and I was amused by the comment about using his laptop to use Google to calculate when he should start his bread machine, and his quote "there are fields, endless fields, where Google servers are no longer born, they are grown". The answer to his question is: lots, but less if we can tell its just a calculation and not perform the actual search... its actually really impressive, but you'll just have to take my word for it.